baber/WOPTO huggingface dataset:
Patent WO-2019062625-A1 (WO)
Title: Wall-mounted air conditioner indoor unit
Inventor: LI YINGSHU
IPC: F24F13/30
Filed: 2018-09-19
Abstract: A wall-mounted air-conditioner indoor unit (100), comprising: a housing (110), which is opened with an air inlet (116) and an air outlet (117), the air outlet (117) being oval and being disposed at a lower part of the housing (110); a heat exchanger (140), which is disposed at an inner portion of the housing (110); a blowing assembly (120), which is disposed within the air outlet (117) and which comprises a first blowing part (128) and a second blowing part (129) that are transversely arranged; a first blowing opening (124) and a second blowing opening are formed on inner peripheral walls of the first blowing part (128) and the second blowing part (129), being used for blowing airflow within the first blowing part (128) and second blowing part (129) forwards so as to drive ambient air in a first exhaust hole (1282) and a second exhaust hole (1292) that are defined by inner peripheral walls of the first blowing part (128) and the second blowing part (129) to be delivered forwards; a first air supply assembly (130), which is used for producing a first heat exchanging airflow that enters from the air inlet (116) and that is provided into the first blowing part (128) after heat exchange by the heat exchanger (140); a second air supply assembly (150), which is used for producing a second heat exchanging airflow that enters from the air inlet (116) and that is provided into the second blowing part (129) after heat exchange by the heat exchanger (140). The wall-mounted air-conditioner indoor unit gently supplies air, has a fast heat exchange speed, has a compact structure, and complies with the usage habits of users, while air supply mode is flexible, being capable of satisfying the regulatory requirements of different requirements.
Patent WO-2020010735-A1 (WO)
Title: Tuning apparatus and method for transmitting and receiving shared network
Inventor: HE SIYUAN
IPC: H04B1/40
Filed: 2018-10-12
Abstract: Disclosed are a tuning apparatus and method for transmitting and receiving a shared network. The apparatus comprises a Balun, a receiving edge capacitor array, a transmitting edge capacitor array, a receiving radio frequency front-end circuit and a transmitting radio frequency front-end circuit, wherein the Balun is connected to an input circuit of the receiving edge capacitor array; the Balun is connected to an input end of the transmitting edge capacitor array; an output end of the receiving edge capacitor array is connected to an input end of the receiving radio frequency front-end circuit; and the input end of the transmitting edge capacitor array is connected to an output end of the transmitting radio frequency front-end circuit. In the present invention, the receiving edge capacitor array and the transmitting edge capacitor array are respectively arranged at a receiving end and a transmitting end to be independently controlled, so that matching of the input and output in a TDD mode can be adjusted by the capacitor arrays to realize optimal performance in the respective modes, thereby avoiding compromising performance of transmitting and receiving paths due to only one set of capacitor arrays being provided, and effectively improving the quality of the received and transmitted signals. The present invention can be widely applied to the technical field of communications.
Patent WO-2019161673-A1 (WO)
Title: Remote control
Inventor: XIANG SHENGZHAO
IPC: H01Q1/52
Filed: 2018-10-24
Abstract: Embodiments of the present invention provide a remote control. The remote control comprises at least one microstrip antenna and a housing. The microstrip antenna comprises a microstrip feed line disposed on an inner wall of the housing, an antenna element arm, a first antenna ground end, and a coaxial feed line. The feed end of the coaxial feed line is connected to a first end of the microstrip feed line, and the ground end of the coaxial feed line is connected to the first antenna ground end. A second end of the microstrip feed line is connected to the antenna element arm. The microstrip antenna in the remote control provided by the embodiments of the present invention has a size suitable for being built in a space, and would be less affected by environmental interference generated inside the remote control; thus, a built-in antenna for the small internal space of the remote control is designed.
Patent WO-2020087359-A1 (WO)
Inventor: HUANG WEIDONG
IPC: B29C64/209
Filed: 2018-10-31
Abstract: An apparatus (4) for 3D printing and a control method thereof The apparatus (4) comprises: a material feed tube (5) having an opening (52) arranged at an outer wall thereof and extending axially along the material feed tube (5); and a casing (6) sleeved onto the material feed tube (5), a material outlet (65) being arranged at an outer wall thereof and in communication with the opening (52). In the apparatus (4), the material outlet (65) is arranged at the casing (6), and the casing (6) is sleeved onto the material feed tube (5), such that the overall structure of the apparatus (4) is more compact.
Patent WO-2019086013-A1 (WO)
Title: Housing, manufacturing method of the same, and electronic device
Inventor: ZENG YUANQING
IPC: B29C45/26
Filed: 2018-11-02
Abstract: A manufacturing method of a housing (150, 200) includes the following steps: a preformed housing (100) is provided. The preformed housing (100) includes a body (15) and a sidewall (16) connected to the edge of the body (15), and a decoration film (130) disposed on the body (15) and the sidewall (16). A portion of the sidewall (16) is exposed from the decoration film (130). The body (15) comprises a first surface (110). The sidewall (16) comprises a second surface (160). The second surface (160) extends from the first surface (110). The first surface (110) and the second surface (160) are non-coplanar. A decoration layer (140) is formed on the exposed portion of the sidewall (16) by a surface processing treatment.
Patent WO-2019096021-A1 (WO)
Title: 生成动态信用卡安全码的方法和设备、银行卡和认证方法
Inventor: ZHOU TAO
IPC: G06Q20/34
Filed: 2018-11-05
Abstract: 本发明提供一种生成动态信用卡安全码的方法，该方法包括：获取动态数据元素，用所述动态数据元素替换所述信用卡的主账号PAN的一部分，从而生成更新的主账号PAN；对所述更新的主账号PAN进行加密，得到第一数据块；以及基于所述第一数据块生成所述动态信用卡安全码。本发明还提供了一种生成动态信用卡安全码的设备、银行卡以及由发卡行认证服务器执行的认证方法。本发明的生成算法计算环节少，计算结果的随机性好。 (图1)
Patent WO-2019114466-A1 (WO)
Inventor: HU HONGWEI
IPC: B23K26/06
Filed: 2018-11-07
Abstract: L'invention concerne un dispositif de traitement au laser, comprenant : au moins deux lasers (11, 12), utilisés de façon à générer un faisceau laser respectivement ; des unités de focalisation (21, 22), agencées en correspondance biunivoque avec lesdits lasers, et utilisées pour régler les positions de focalisation d'au moins deux faisceaux laser générés par lesdits lasers ; et un combineur de faisceaux (30), utilisé de façon à recevoir lesdits faisceaux laser après réglage des positions de focalisation et à délivrer en sortie lesdits faisceaux laser coaxialement. Le dispositif de traitement au laser décrit peut économiser du temps de traitement, améliorer la précision de traitement et améliorer l'utilisation d'énergie laser. La présente invention concerne en outre un procédé de fabrication pour un produit d'affichage.
Patent WO-2019148927-A1 (WO)
Title: Air conditioner employing electrochemical compressor and hydrogen leak detection method and device
Inventor: ZHANG LONG
IPC: F24F11/36
Filed: 2018-11-08
Abstract: An air conditioner employing an electrochemical compressor (1) and a hydrogen leak detection method and device. The method comprises: acquiring a first hydrogen delivery flow of a first hydrogen delivery pipeline (31) of an electrochemical compressor (1) communicating with a first metal hydride heat exchanger (21), and a second hydrogen delivery flow of a second hydrogen delivery pipeline (32) of the electrochemical compressor (1) communicating with a second metal hydride heat exchanger (22); comparing an absolute value of a flow difference between the first hydrogen delivery flow and the second hydrogen delivery flow with a preset flow deviation value; and determining, according to a comparison result, whether an air conditioner has a hydrogen leak.
Patent WO-2019161687-A1 (WO)
Inventor: HU SHUIXIU
IPC: G09G3/36
Filed: 2018-11-26
Abstract: 提供了一种显示装置的驱动方法、显示装置的驱动系统及显示装置。该驱动方法能够使显示面板的公共电极电压在不同帧之间进行电压极性的切换，防止显示面板的画面出现色偏。
Patent WO-2020087637-A1 (WO)
Inventor: LIU BOFU
IPC: A61M1/00
Filed: 2018-11-30
Abstract: L'invention concerne un couvercle de solution préscellé, comprenant un corps de couvercle (1), une aiguille (2), une solution (3) et un film de thermoscellage (4) ; le corps de couvercle (1) comprenant une surface supérieure (101) de couvercle et une paroi latérale (102) de couvercle, ainsi que des parties de pression (103) et des aiguilles (2) disposées de manière correspondante du côté extérieur et du côté intérieur de la surface supérieure (101) de couvercle ; un bossage annulaire (104) façonné sur le côté périphérique de chaque aiguille (2), une cavité de solution comportant une ouverture délimitée par le bossage annulaire (104) et par la surface supérieure (101) de couvercle et remplie de la solution (3), et l'ouverture étant scellée par le film de thermoscellage (4) ; et une rainure anti-blocage de solution (201) ménagée dans la surface de chaque aiguille (2) pour empêcher que l'aiguille (2) ne bloque l'ouverture de perforation après la perforation du film de thermoscellage (4). L'invention concerne également deux cathéters hydrophiles portables (6), un cathéter comprenant le couvercle de solution préscellé, un tube de conditionnement (5) et un cathéter hydrophile (6), et l'autre cathéter comprenant le couvercle de solution préscellé, une boîte de conditionnement (8) et un cathéter hydrophile (6). Le côté interne du fond de la boîte de conditionnement (8) est pourvu d'une rainure de placement de cathéter en forme de ligne spiralée (801) et d'une rainure de dragage (802) de solution qui est ménagée au centre de la rainure de placement de cathéter (801) et qui communique avec cette dernière. Les cathéters hydrophiles portables (6) sont de petite taille, sont pratiques à transporter indépendamment, pratiques à utiliser et à recycler, de faible coût de fabrication et appropriés pour des cathéters hydrophiles (6) de diverses spécifications.
Patent WO-2019114728-A1 (WO)
Title: 一种适于短烟支生产的分离导向传送机构
Inventor: YANG CHENGBO
IPC: B65G47/88
Filed: 2018-12-12
Abstract: 本发明公开一种适于短烟支生产的分离导向传送机构，该传送机构包括彼此之间呈平行线设置的切割鼓轮、传送鼓轮和分离鼓轮，其中，在分离鼓轮的上方活动设有导流板，在导流板的外侧凸面上设有固定件，固定件通过销钉连接连接件，连接件一端通过紧固件固定在分离鼓轮阀座上，连接件另一端设有固定手柄；在导流板的内侧凹面上径向设有与之相吻配的导向板。本发明能够满足高精度高可靠度分离，可实现烟支分离时的高精度高可靠性导向，在满足烟支分离复杂载荷环境要求的同时，通过相互之间的切向和法向作用力即可实现对烟支分离轨迹的控制，能适应不同功能、不同形状、不同体积的烟支分离使用，为下一道工序烟支的搓接成形提供了便利。
Patent WO-2019120209-A1 (WO)
Title: Exo-aza spiro inhibitors of menin-mll interaction
Inventor: DAI XUEDONG
IPC: A61K31/47
Filed: 2018-12-19
Abstract: Provided are compounds of Formula (I), pharmaceutical compositions comprising such compounds, and their use as menin/MLL protein/protein interaction inhibitors, useful for treating diseases such as cancer, myelodysplastic syndrome (MDS) and diabetes.
Patent WO-2019214252-A1 (WO)
Title: Motor rotor assembly structure
Inventor: LIU LEI
IPC: H02K1/22
Filed: 2018-12-26
Abstract: Disclosed in the present invention is a motor rotor assembly structure, comprising a rotating shaft, multiple rotor iron cores formed by neatly laminating a plurality of rotor punching sheets, and rotor pressing plates mounted on front and rear ends of the rotor iron cores, wherein a shaft hole used for mounting the rotating shaft is opened at a middle part in the axial direction of the rotor iron cores, and the two rotor pressing plates are used to tightly press the plurality of rotor punching sheets; the rotating shaft is a hollow shaft; the plurality of rotor punching sheets have the same structure; each rotor punching sheet is opened thereon with a plurality of groups of positioning holes; the plurality of rotor punching sheets is positioned and fixedly mounted on the rotating shaft by means of the plurality of groups of positioning holes so as to achieve inter-segment skew poles of the rotors. The motor rotor assembly structure is formed by employing one type of rotor punching sheet for lamination, thus reducing the types of rotor punching sheets and lowering the mold-breaking costs of punching sheet rotors; a key slot is not required on the rotating shaft, and hollow shaft design requirements may be met by means of a variety of low-cost processes, which reduces the overall weight of a motor and also saves materials; moreover, it is ensured that the center of gravity of the motor rotor assembly will not shift, thereby guaranteeing the dynamic balance precision of the rotor.
Patent WO-2020098109-A1 (WO)
Title: 一种交互式上肢康复训练系统
Inventor: XIE LONGHAN
IPC: A63B23/12
Filed: 2018-12-28
Abstract: 一种交互式上肢康复训练系统，包括互动显示屏(16)、上位机控制中心(17)、双臂康复机器人(1)、移动式空间可调节双臂机器人底座、位置跟踪器(13,15)，双臂康复机器人(1)安装于移动式空间可调节双臂机器人底座上，并通过两末端执行器(14)带动患者手臂进行运动；移动式空间可调节双臂机器人底座用于调整双臂康复机器人(1)的操作空间；位置跟踪器(13,15)用于实时采集患者的手臂位置姿态信息并传入上位机控制中心(17)及互动显示屏(16)；互动显示屏(16)用于通过手臂位置姿态信息同步操作游戏；上位机控制中心(17)用于存储患者信息、对患者的康复过程进行评估后给出量化指标。交互式上肢康复训练系统实现了上肢康复训练过程的安全化、科学化、趣味化和数据化。
Patent WO-2019129214-A1 (WO)
Title: 针对破伤风毒素的全人源单克隆中和抗体及其应用
Inventor: LIAO HUAXIN
IPC: A61K39/40
Filed: 2018-12-28
Abstract: 本发明公开了针对破伤风毒素的全人源单克隆中和抗体。本发明通过高通量全人源单克隆抗体研发综合技术平台开发出了全人源抗破伤风毒素单克隆中和抗体。本发明的单克隆中和抗体能用于破伤风梭菌感染的预防和治疗、用于破伤风梭菌感染的检测。本发明研发的全人源抗破伤风毒素单克隆中和抗体与破伤风毒素具有极强的亲和力、且具有极强的中和活性，安全且高效，无外源病毒污染，可广泛适用于各种人群，具有很强的工业实用性。
Patent WO-2020146980-A1 (WO)
Inventor: Lin Hangdong
IPC: G06V10/48
Filed: 2019-01-14
Abstract: A lane line recognizing method, comprising: acquiring a first image, the image being a road image (S101); dividing the first image at the middle, determining a first sub-image located on the left of the first image and a second sub-image located on the right of the first image (S102); and performing recognition respectively with respect to the first sub-image and the second sum-image to determine a first lane line in the first sub-image and a second lane line in the second sub-image (S103). The method increases the accuracy of lane line detection and significantly increases the rate of detection. Also provided are a lane line recognizing device (500 and 600) and a nonvolatile storage medium.
Patent WO-2019141187-A1 (WO)
Title: Drying device for dishwasher and dishwasher
Inventor: WU JIANQING
IPC: A47L15/48
Filed: 2019-01-16
Abstract: A drying device (10) for a dishwasher and the dishwasher (1). The drying device (10) comprises: a body (100) which has a first air passage (110) and a second air passage (120), the first air passage (110) has a first air inlet (111) and a first air outlet (112), and the second air passage (120) has a second air inlet (121) and a second air outlet (122), the first air inlet (111) is adapted to be in communication with a tub (20) of the dishwasher (1), and the second air inlet (121) is in communication with the outside; and a heat exchanger (200) which is provided in the body (100) and is in communication with the first air passage (110) and the second air passage (120), respectively, one of the first air outlet (112) and the second air outlet (122) is in communication with the outside and the other is adapted to be in communication with the tub (20).
Patent WO-2020124814-A1 (WO)
Inventor: HUA JIAN
IPC: A61M11/00
Filed: 2019-03-13
Abstract: L'invention concerne un dispositif d'atomisation ayant deux modules, comprenant un hôte d'atomisation (2), un tube à trois voies (1), un dispositif de contrôle (3), un ventilateur et un masque. L'hôte d'atomisation (2) comprend un couvercle latéral (201), une buse (203), une bouteille de médicament liquide (204) et une feuille d'atomisation (206), et une première interface de raccordement (2051). Une partie inférieure à l'intérieur de la buse (203) est pourvue d'une plaque de séparation (207) qui divise l'intérieur de la buse (203) en une chambre d'atomisation supérieure (2031) et une chambre d'écoulement d'air inférieure (2032). La plaque de séparation (207) est pourvue au dessus une structure de détection d'écoulement de gaz (2033) s'étendant à l'intérieur du tube à trois voies (1). La structure de détection de flux d'air (2033) comprend une plaque trapézoïdale inversée, une saillie (101), une chambre à gaz et une fente (208), la fente (208) étant pourvue intérieurement d'un capteur (209) qui détecte le gaz s'écoulant à travers la chambre à gaz, et la première interface de raccordement (2051) est pourvue à l'intérieur d'une première carte de circuit imprimé (205) qui est connectée au capteur (209). La feuille d'atomisation (206) est reliée à la première carte de circuit imprimé (205). Le capteur (209) détecte le signal d'écoulement de gaz à l'intérieur de la chambre à gaz, puis envoie un signal au dispositif de contrôle (3), et le dispositif de contrôle (3) entraîne l'hôte d'atomisation (2) à générer un médicament liquide atomisé devant être éjecté de la buse (203) pour une administration. Le dispositif est pratique et flexible, et est étanche à l'eau et sa structure est durable.
Patent WO-2019185014-A1 (WO)
Inventor: LOU CHONG
IPC: H04W72/10
Filed: 2019-03-29
Abstract: 本申请提供了一种通信方法、通信装置和系统，能够减小紧急业务的传输时延。该方法包括：接收上行授权；根据该上行授权指示的上行授权资源在时域上的位置，确定用于传输第一业务数据的第一上行授权资源；利用该第一上行授权资源传输第一业务数据。
Patent WO-2020199142-A1 (WO)
Inventor: YAO GUOFENG
IPC: G02B27/30
Filed: 2019-04-02
Abstract: An optical collimator (30), comprising 2N-1 sub-collimators (31, 32, 33, 34, 35), wherein N is a positive integer greater than 1, a collimating hole is provided on a first metal layer (301) to form a first sub-collimator (31); a collimating hole is provided on a second metal layer (303) located above the first metal layer (301) to form a third sub-collimator (33); an i-1th through hole layer is between an i-1th metal layer and an ith metal layer, an i-1th through hole is provided in the i-1th through hole layer, the i-1th through hole filled with metal is used to connect the i-1th metal layer and the ith metal layer, and the i-1th through hole layer is a 2i-2th sub-collimator, wherein i successively takes 2, 3, ...N; and a collimating hole is provided on the ith metal layer located above the i-1th metal layer to form a 2i-1th sub-collimator among the 2N-1 sub-collimators. A fabrication method for an optical collimator. The present optical collimator may improve the spatial filtering ability thereof for light.
Patent WO-2019196803-A1 (WO)
Title: Pyrazolotriazolopyrimidine derivatives as a2a receptor antagonist
Inventor: ZHANG GUOLIANG
IPC: A61K31/519
Filed: 2019-04-08
Abstract: Disclosed herein is a pyrazolotriazolopyrimidine derivative or a stereoisomer thereof, or a pharmaceutically acceptable salt thereof useful as an A2A receptor antagonist, and a pharmaceutical composition comprising the same. Also disclosed herein is a method of treating cancer using the pyrazolotriazolopyrimidine derivative or a stereoisomer thereof, or a pharmaceutically acceptable salt thereof as an A2A receptor antagonist.
Patent WO-2019228490-A1 (WO)
Title: Touch array substrate, fabrication method therefor and touch screen comprising same
Inventor: QIN WENWEN
IPC: G06F3/041
Filed: 2019-05-31
Abstract: Provided by the present disclosure are a touch array substrate, comprising a substrate and a film layer structure. The film structure comprises: a touch electrode layer, comprising a plurality of touch electrodes arranged in an array; a first conductive layer, comprising a plurality of touch electrode lines and virtual touch electrode lines; and a second conductive layer, comprising connecting lines. The touch electrode lines are electrically connected to corresponding touch electrodes by means of first via holes, the virtual touch electrode lines are electrically connected to corresponding touch electrodes by means of second via holes, and the connecting lines electrically connect, by means of third via holes, the touch electrode lines and the virtual touch electrode lines that are electrically connected to the same touch electrodes. The touch electrode layer, the first conductive layer and the second conductive layer are separated from each other by means of insulating layers. Further provided by the present disclosure are a fabrication method for the touch array substrate and a touch screen comprising the touch array substrate.
Patent WO-2020038046-A1 (WO)
Inventor: GONG GUAN
IPC: H04M1/02
Filed: 2019-05-31
Abstract: La présente invention concerne un terminal mobile, comprenant : un écran d'affichage ; un boîtier, comprenant un côté avant, un côté arrière et un côté supérieur, le côté avant étant disposé à l'opposé du côté arrière, le côté supérieur étant relié entre le côté avant et le côté arrière, l'écran d'affichage étant disposé sur le côté avant, le boîtier étant pourvu d'un évidement de réception, et l'évidement de réception étant formé en étant enfoncé depuis le côté supérieur dans le boîtier ; un élément mobile, l'élément mobile étant pourvu d'un composant fonctionnel sur celui-ci capable de se déplacer dans et hors de l'évidement de réception conjointement avec l'élément mobile ; le côté arrière étant pourvu d'une saillie ayant un espace d'évitement ; l'espace d'évitement étant en communication avec l'évidement de réception et passant à travers la saillie depuis le côté arrière, et lorsque l'élément mobile se déplace dans l'évidement de réception, l'élément mobile étant partiellement situé dans l'espace d'évitement.
Patent WO-2020001354-A1 (WO)
Title: 主备容器系统切换
Inventor: LI YONG
IPC: G06F9/455
Filed: 2019-06-20
Abstract: 本公开涉及一种主备容器系统切换方法及装置，所述方法应用于部署在物理网络设备中的作为主容器系统的第一容器系统，所述物理网络设备中创建有共享文件，包括：接收用户输入的系统升级指令；响应于所述系统升级指令，向所述物理网络设备中作为与所述主容器系统对应的备容器系统的第二容器系统发送容器系统数据；当接收到所述第二容器系统发送的数据备份完成通知后，向所述共享文件中写入主备容器系统切换通知，以使所述第二容器系统在监测到所述共享文件中存在所述主备容器系统切换通知时，切换所述第二容器系统为所述主容器系统。
Patent WO-2020228128-A1 (WO)
Inventor: Lu tianfa
IPC: G06F3/06
Filed: 2019-07-18
Abstract: Disclosed is a method for storing streaming media data, comprising the following steps: S1, filling a storage space by using a pre-created file block having a fixed size; S2, selecting an appropriate file block to store streaming media data, simultaneously marking the selected file block as in an occupied state, and establishing an index between the stored streaming media data and the seconds of storage time; and S3, using the index to position the location at which the stored streaming media data is located. The streaming media data is stored in the file block for storage and deletion, thus the problem of disk fragments caused by cyclic storage in a storage space in a streaming media data storage process can be effectively solved, the service life of a disk is prolonged, and the purpose of improving the usage efficiency of a disk is achieved. Streaming media data can be quickly retrieved and randomly jumped and replayed according to time, thus improving the efficiency of retrieving and positioning the streaming media data.
Patent WO-2021007855-A1 (WO)
Title: 基站、像控点定位方法、电子设备和计算机可读介质
Inventor: HUANG ZHENHAO
IPC: G01S19/33
Filed: 2019-07-18
Abstract: 一种基站、像控点定位方法、电子设备和计算机可读介质，其中，该基站包括支撑件(110)和靶标(120)；支撑件(110)的顶部安装有第一天线和GNSS接收机(111)，第一天线与GNSS接收机(111)相连接；靶标(120)与支撑件(110)的底部的一侧固定连接，靶标(120)的中心安装有第二天线，第二天线与GNSS芯片(121)相连接，靶标的中心用于作为航测时的像控点；GNSS接收机(111)和GNSS芯片(121)分别与处理器通信连接，处理器用于基于GNSS接收机(111)和GNSS芯片(121)所获取的卫星数据，确定第一天线与像控点的基线向量坐标差，并基于第一天线的坐标和基线向量坐标差，确定像控点的坐标。该基站具备像控点的定位功能，提高了对像控点的定位效率。
Patent WO-2020057264-A1 (WO)
Title: 太阳能电池及其制备方法
Inventor: SHAO JIAJUN
IPC: H01L31/0216
Filed: 2019-07-30
Abstract: 一种太阳能电池及其制备方法，该方法包括制绒、扩散、背面去PSG、碱抛光、正面重掺杂、正面去PSG、退火、沉积钝化膜、沉积减反膜、背面开孔、电极印刷、烧结退火的步骤。通过背面碱抛光有效降低了太阳能电池背面反射率，使得长波段透射率明显降低，从而减少了光的透射损失，增加了电流密度Jsc，进而提高了SE-PERC太阳能电池的转换效率。